The concentrations of U in natural waters are usually low, being typically less than 4 μg/L in
river water, around 3.3 μg/L in open seawater, and usually less than 5 μg/L in groundwater …

Trace elements are actively cycled in seawater, are essential components for marine life,
and are transported to the seafloor where they can become enriched in marine sediments …

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb
geochronology of carbonate minerals, calcite in particular, is rapidly gaining popularity as an …

Reactions of the light actinide ions (Th to Cm) at the mineral− aqueous solution interface
have attracted much attention during recent years. Initially research was mainly driven by the …

This review focuses on the rapidly growing field of natural 238U/235U variability, largely
driven by the technical advances in the measurement of U isotope ratios by mass …

By 1911, the atomic weight of uranium had been refined to 238.5 (Gmelin, vol. A2, 1980a).
The natural isotope 235 U was discovered in 1935 by mass spectrometry. The artificial …

In order to validate the use of 238 U/235 U as a paleoredox proxy in carbonates, we
examined the incorporation and early diagenetic evolution of U isotopes in shallow …

The origins and near-surface distributions of the~ 250 known uranium and/or thorium
minerals elucidate principles of mineral evolution. This history can be divided into four …

The rapid kinetics of bacterial U (VI) reduction and low solubility of uraninite (UO2, cr) make
this process an attractive option for removing uranium from groundwater. Neverthe less …

The row of 15 chemical elements from Ac to Lr with atomic numbers from 89 to 103 are
known as the actinides, which are all radioactive. Among them, uranium and plutonium are …